22:32Boston CallingInto the thaw (Part two)BBC World Service Duration: 27 minutes Sat 14th Sep 2019, 22:32 on BBC World Service West and Central AfricaAvailable for over a yearListen nowIf Thwaites Glacier collapses, it would change global coastlines forever. Show more GenresFactualFormatsDocumentariesBrandBoston Calling Source: BBC Online